diff --git a/examples/petpassport/petpassport/requirements.txt b/examples/petpassport/petpassport/requirements.txt
index 3235564..536428b 100644
--- a/examples/petpassport/petpassport/requirements.txt
+++ b/examples/petpassport/petpassport/requirements.txt
@@ -1,4 +1,4 @@
-google-adk==1.28.0
+google-adk==1.28.1
 python-dotenv
 google-genai
 pillow